.arrow-container {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  justify-content: space-between;
  display: none;
}
.banner-container:hover .arrow-container {
  display: flex;
}
.arrow-container span {
  color: #fff;
  width: 20px;
  height: 30px;
  line-height: 30px;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  box-sizing: border-box;
  cursor: pointer;
  text-align: center;
}
